diff --git a/more/problem-sets-competitive-programming.md b/more/problem-sets-competitive-programming.md
index 36fb802ff..a76c757f7 100644
--- a/more/problem-sets-competitive-programming.md
+++ b/more/problem-sets-competitive-programming.md
@@ -58,6 +58,7 @@
 * [ångstromCTF](https://angstromctf.com)
 * [CTFlearn](https://ctflearn.com) (email address *requested*)
 * [CTFtime](https://ctftime.org)
+* [DamnVulnerableDefi](https://www.damnvulnerabledefi.xyz)
 * [echoCTF](https://echoctf.red) (email address *requested*)
 * [Google CTF](https://capturetheflag.withgoogle.com) (email address *requested*)
 * [Hacker101](https://ctf.hacker101.com) (email address *requested*)